I temporarily fixed this using systemd-tmpfiles: # cat /etc/tmpfiles.d/kea.conf #Type Path Mode UID GID Age Argument d /run/kea 0755 root root - -
# systemd-tmpfiles --create Instead of using /var/kea I used /var/lib/kea which existed from before the upgrade. Set a "name", actually a path, for your lease-database: "lease-database": { // Memfile is the simplest and easiest backend to use. It's a in-memory // C++ database that stores its state in CSV file. "type": "memfile", "lfc-interval": 3600, "name": "/var/lib/kea/dhcp4.leases" }, Best regards Martin